It is a scam, but at least you don't lose too much money. I opted for the the 3-day card that cost 31 euros. I received a 3-day ticket to all public means of transportation (available everywhere for 13 euros), a bus ticket to Bergamo airport (available online for 10 euros) and was scamed for the rest of the 8 euros. If you trust their website they have some discount offers for some very specific tickets to a veeerry limited number of museums. I didn't even try that, so I am down 8 euros. Could had been worse, but the police should close down this madness.
Claim your business profile now and gain access to all features and respond to customer reviews.